springboot注入FilterRegistrationBean不生效
回顾
最近自定义了两个过滤器,接口请求返回加密和sql注入处理过滤器,因为在封装一些工具包,我在单独调好之后,就打算做成一个注解,像springboot启动类上加@EnableScheduling一样,可以随意控制,当我不想让这俩过滤器生效的时候,那就不加这个注解就可以了。
当然我想到了FilterRegistrationBean的使用方法,注入这两个过滤器。
但是当我写完之后,打成包之后,发现只有sql注入过滤器生效。
原因
原因就是我通过@Bean注解注入FilterRegistrationBean时,没有对它们起别名,造成冲突,只能注入一个。
我的工程里,写了两个下边的方法:
注入加密过滤器
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/**
* @return 注入加密过滤器
*/
@Bean
public FilterRegistrationBean filterRegistration() {
FilterRegistrationBean registration = new FilterRegistrationBean();
registration.setFilter( new EncryptionFilter());
registration.addUrlPatterns( "/*" );
registration.setName( "encryptionFilter" );
registration.setOrder( 1 );
return registration;
}
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注入sql注入过滤器
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/**
* @return 注入加密过滤器
*/
@Bean
public FilterRegistrationBean filterRegistration() {
FilterRegistrationBean registration = new FilterRegistrationBean();
registration.setFilter( new SqlInjectManagerFilter());
registration.addUrlPatterns( "/*" );
registration.setName( "sqlInjectManagerFilter" );
registration.setOrder( 2 );
return registration;
}
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这个问题虽然简单,但是确实影响到我思路了,我最初一直在考虑是不是我做的springboot启动类加注解触发过滤器注入的方式不对,也是因为我看了下@EnableTransactionManagement的注入方式,我差点就怀疑@Import在打成工具包后不能多个使用的问题。尴尬~~~
当我一比较这俩方法的时候,我才怀疑到名字冲突了。因此就分别对它们加了名称如下:
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/**
* @return 注入加密过滤器
*/
@Bean (name = "encryptionFilter" )
public FilterRegistrationBean filterRegistration() {
FilterRegistrationBean registration = new FilterRegistrationBean();
registration.setFilter( new EncryptionFilter());
registration.addUrlPatterns( "/*" );
registration.setName( "encryptionFilter" );
registration.setOrder( 1 );
return registration;
}
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/**
* @return 注入加密过滤器
*/
@Bean (name = "sqlInjectManagerFilter" )
public FilterRegistrationBean filterRegistration() {
FilterRegistrationBean registration = new FilterRegistrationBean();
registration.setFilter( new SqlInjectManagerFilter());
registration.addUrlPatterns( "/*" );
registration.setName( "sqlInjectManagerFilter" );
registration.setOrder( 2 );
return registration;
}
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springboot @webfilter FilterRegistrationBean「T」
1、@webfilter过滤指定url
在启动类加注解@ServletComponentScan
2、Filter类:
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import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.annotation.WebFilter;
@WebFilter (urlPatterns= "/task" )
public class DemoFilter implements Filter {
@Override
public void init(FilterConfig filterConfig) throws ServletException {
}
@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
throws IOException, ServletException {
System.out.println( "Filter demo task" );
chain.doFilter(request, response);
}
@Override
public void destroy() {
}
}
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3、@webfilter过滤全部路径
在filter类上加 @Component 或 @Configuration 注解:
4、FilterRegistrationBean<T> 过滤指定url 或 全部路径
直接在FilterRegistrationBean<T>中配置即可:
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import org.apache.catalina.filters.RemoteIpFilter;
import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import javax.servlet.*;
import javax.servlet.http.HttpServletRequest;
import java.io.IOException;
@Configuration
public class ConfigurationFilter {
@Bean
public RemoteIpFilter remoteIpFilter() {
return new RemoteIpFilter();
}
@Bean
public FilterRegistrationBean<MyFilter> testFilterRegistration() {
FilterRegistrationBean<MyFilter> registration = new FilterRegistrationBean<MyFilter>();
registration.setFilter( new MyFilter()); //添加过滤器
registration.addUrlPatterns( "/user" ); //设置过滤路径,/*所有路径
//registration.addInitParameter("name", "alue");//添加默认参数
registration.setName( "MyFilter" ); //设置优先级
registration.setOrder( 2 ); //设置优先级
return registration;
}
public class MyFilter implements Filter {
@Override
public void destroy() {
}
@Override
public void doFilter(ServletRequest srequest, ServletResponse sresponse, FilterChain
filterChain)
throws IOException, ServletException {
HttpServletRequest request = (HttpServletRequest) srequest;
System.out.println( "this is MyFilter,url :" + request.getRequestURI());
filterChain.doFilter(srequest, sresponse);
}
@Override
public void init(FilterConfig arg0) throws ServletException {
}
}
}
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以上为个人经验,希望能给大家一个参考,也希望大家多多支持服务器之家。
原文链接:https://blog.csdn.net/wohaqiyi/article/details/115390060